Automatic type-writer actuator.



L.R.ROBERT&

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FILED IU NE 25,1913.

Patnted Feb. 8,1916.

9 SHEETS-SHEET I.

INVENTOR 1 mm BY ATTO EY WITNESSES L. R. ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR. APPLICATION FILED mums, 1913.

I Patented Feb. 8,1916.

9 SHEETS-SHEET 2.

FIG.2.

. H ll O klh WITNESSES:

INVENTORH AW OZW L. R. ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FILED JUNE 25, 1913.

1,171,354. Patented Feb. 8,1916.

' 9 SHEETSSHEET a.

I Y INVENTOR" W|TNESSE$ l W 1 BY 7mm 1 ATTQ Nl EY- L. R ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FII .ED JUNE 25, I913.

Patented Feb. 8,1916.

9 SHEETSSHEET 4.

WITNESSES: INVENTOR:

' a A .7 ,BY

. f A AATTORTQEY.

Patented Feb. 8,1916.

9 SHEETS-SHEET 5 FIG. 5.

WITNESSES:

L. R. ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FILED JUNE 25, 1913.

Patented Feb. 8,1916.

9 SHEETS-SHEET 6.

WITNESSES INVENTOR: m WW BY 7W 6E6Z W ifkzzflzna ATTOZzZY L/R. ROBERTS.

Patented Feb. 8,1916.

9 SHEETS-SliEET 1.

WITNESSES INVENTOR= 4 fi /LM X W Z @W BY m ATTORIZ/Z.

L. R. ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FILED JUNE 25. 1913.

9 SHEETS-SHEET a.

FIGJI.

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e98/ I c 0 o z9Q9 o o 0 O 0 [/7 I o ,v 8 0 0 WITN ESSES INVENTOFU g gge J EM v ATTOR EY.

L. R. ROBERTS.

AUTOMATIC TYPE WRITER ACTUATOR.

APPLICATION FILED JUNE 25.1913.

1,171,354. v Patented Feb. 8,1916.

9 SHEETSSHEET 9.

FIG VB- WITNESSES A kwggzgg: DZ I BY %%(W ATTQ EY.-

(LYMAN n,- ROBERTS, ornurnnnron'n, NEW JERSEY, As stat on no mvnnnwoon TYPEWRITEIB. com any, or NEW YORK, 1v. Y., Aeonroimrion or DELAWARE.

- AuroiiArid'rYrn wmrnn ACTUATOR. i

To all whom it may concern} Be it known that I, LYMAN R. ROBERTS,

\ a citizen of the United States, residing in Rutherford,'in the county .of Bergen and State of New J ersey, l1ave invented certain new and useful Improvements in Automatic Type-Writer Actuators, of which the if following is a specification.

This invention relates to mechanism for automatically feeding envelops around the platens of typewriting machines, and has a special value in connection with automatic typewriter operators, such as shown for in-v stance in my pending Patent No. 1,109,597,

granted September 1, 1914, to Lyman-R. .Roberts and Charles L.'Davis jointly. In

said .patent, a perforated'sheet is run over a tracker board, whereby hammers are caused to operate the keys of the typewriter.

By means of suitable perforations in the master sheet, a pneumatic mechanism is controlled for line-spacing the platen of the typewriting machine and'returning the carriageto begin a new line;

In accordance with the present invention, the envelops are placed in a receptacle,- and one by one are picked up by hooks provided upon an endless belt or'pair of belts, which carry the envelops around the platen of the writing machine; said belts being driven by a suitable train 'of mechanism connected to the platen itself. The envelop-feeding belts are illustrated as made of thinflexible metal strips, and the hooks are punched at intervals 1nv the strips, to project slightly therefrom, in position to catch under the flaps of the envelops. The receptacle-for the stack of envelops is provided with means which tend to project'the flaps'slightly away from The envelop-feeding devices are all mount ed upon the platen frame of a typewriter.

In the case of the'Underwood' typewriter, to. which my invention is shown applied,-

this platen frame shifts up and down for writing capitals and small letters, and'the envelop-feeding devices "aremounted upon.

a light framework comprising a pair of standards, which are secured to the platen Specification of Letters Patent.

' Application filed June?5,1913.

serial in. 775,654.

i Patented 13 t; 3, 1916.

frame of the typewriter, and upon which 1S. IIl011I1l3d a belt-driving shaft having a pair of pulleys over which the belts run,-,-' and also havlng a pinion which is connected by an endless chain, to a sprocket wheel fixed to the revolving platen. Said belt pulleys carryteeth, and the belts are perforated to receive, the .teeth, and hence are positively connected jby'said pulleys, shaft, p1n1on,'chain and sprocket wheel to the pIaten. The rotation of the platen, and

hence the operation ofthe envelop-feeding dev1ces,'may be effected by hand, by means of the usual line-spacing lever, but in the applicationreferred to,,said lever isoper ated by the pneumatic machine whenever a suitable. perforation in the ,master sheet theline-feeding of the envelops during the writmg of the addresses is, in the present instance, preferably controlled by such runs over the tracker board. Accordingly,

master sheet. in the same manner. To ad- Vance the envelops, after the completion of 1 one address, to position to begin writing the next address (on the succeeding envelop), a successlon of perforations 1s provided 1n said master sheet, to cause repeated actuations of the line-spacing lever of the typewriter about eight or ten perforations be-.

ing usually sufli'cient for the purpose. Since ,the master sheet may be prepared for addressing a very large. number of envelops,

and since each of the envelops must be brought automatically to the proper posi- .tion to; receivethe address, I provide the envelop-catching hooks at intervals upon the belts equal to 'exactxmultiples'of the linespacing movementof'the'platen; and as a result a certain number of operations of said'linespacing lever is sure to bring the 1 next envelopto the exact position required for beginning the writing of the address thereon, and there is no liability of gradual creeping of the series of envelops, nor possibility of the result that-part of, the address shall be written on one envelop and the" remainder on another;

Reference is made to my Patent, No.1

1,135,140, granted April 13, 1915, with respect to certain featuresoriginally'containedtherein but subsequently transferred 'to this case. When the application which ultimately mergedint'o said patent, was filed, it

ioo

contained a reference to an earlier co-pendf ing application No. 428,050" filed April 20,

entire envelop-feeding mechanism disclosed. in said Patent No. 1,135,140. In this present application,N 0. 7 7 5,654, claims are made to the pneumatic devices for operatingenvelop .or work-feeding means which are disclosed in Patent No. 1,135,140. Claims in Patent No. 1,109,597 have been limited to typewriting mechanism, and no claim is contained therein for pneumatic or other means for operating such typewriting mechanism. Other features and advantages will here inafter appear. j

Figure l is aside elevation of my invention, showing a pneumatic typewriter operator connected to operate the usual form of an Underwood typewriting machine, upon which the envelop feeder is mounted. Fig.

2 is a front perspective view of the envelop feeder on the typewriter, with such parts of the operator shown, whereby the line-space mechanism is operated to feed the envelops.

-,Fig. 3 is an end view of the operator with the typewriter and envelop feeder removed. Fig. 4 is a front elevation of the parts shown in Fig.2. Fig.5 is a side elevation of the envelop feeder. Fig. 61s a rearperspective view of the envelop receptacle. Fig. 7 is a sectional side elevation of the envelopfeeding devices. F igx8 is a PBISPQCtlXe detail, to illustrate the manner in which the hooks catch within the flap of the envelop. Fig. 9 is a view of the mechanism for controlling the line-spacing and the return of the typewriter carriage. Fig. 10 is a view' of the usual line-space mechanism. Fig. 11

is a sectional view of the primary and secondary pneumatics which control the collapsing of a bellows. Fig. 12 is a view showing thev half-nut in engagement with the screw or worm .for line-spacing or returning the carriage. Fig. 13 is a view of fed'while the other is at rest.

one of the, master sheets. Fig. 14 is a View showing the mechanism for controlling the two master sheets, so that either one may be The typewriting machine comprises keys --1, which-causetype bars 2'to strike against the front side of a cylindrical platen 3. The latter is ournaled by means of an axle 4 in the ends 5 of the platen frame, said ends connected by an inc'linedplate 6, which forms the usual paper shelf behind the platen. The platen frame rests upon a carriage 7, which, it will be understood, is fed in letterrirssa space direction .in the usual manner at the operation of the keys 1. The envelops 6 are stacked in a receptacle at the back of the machine, said receptacle comprising sides 8, a floor 9, and a front plate 10 having at its bottom an opening 11, down through which the envelops are withdrawn. The envelops are picked up by'claws, prongs or hooks 12 provided upon 'work-supporting bands or belts 13, whereby the envelops are carried around the under side of the platen and up in front thereof to be imprinted by the type bars 2. Each of said belts 13 consists of a very thin flexible metal strip, the ends of which may be joined in any suitable manner, as by means of a tongue 14 at one end passing through ail-opening 15 in the other end, Fig. 8. The belts extend upwardly from the platen and run over a pair of guiding pulleys 16, fixed upon a horizontal drive-shaft 17, and having teeth 18 to engage perforations,19 formed in the belts, whereby the latter are positively driven and caused to travel in unison:

The drive-shaft 17 is provided with a sprocket pinion 20, over which runs an endless sprocket chain 21; and to the platen 3 is fixed a sprocket gear 22, over which said chain also runs. The parts are preferably so proportioned that the surface movement of each envelop or other work-piece at each line-spacing operation is exactly equal to the surface movement of the platen, and preferably the feeding of the envelops is aided by the usual pressure rolls 23, 24, running on the under side of the platen, said rolls preventing the envelops from dropping ofi from the hooks 12. The latter,

because of their thinness, are quite yielding, and they may run freely between the rolls 23, 24 and the platen. The platen of the Underwood machine shown in the drawings is advanced intermittently by a lever having the usual connection to the platen, including a slide 26 and a pawl 27, the latter engaging the usual line-space wheel 28, which may be rovided with the usual appurteiiances. aid drive-shaft 17 is carried by a pair of standards or supports 29, 30 in-the form of plates, having at their lower ends front and'rear hooks 31, 32, to catch respectively upon the usual tie-rod or shaft 33, which extends from end to end of the platen frame, and the rolled or head portion 34 which is usually formed upon the top of the paper shelf 6. Each standard 29, 30 is also provided with a strap 35, adjustably secured thereto by a screw 36 pass- "ing through a slot 37; said strap'having a foot 38 to rest upon the platen frame end, to which it is secured by a screw 39; the whole forming a light structure of great rigidity, said strap 35 inclining downwardly andoutwardly from the standard to buttress the same. The standards may also be connected tie-rods 40 and 41.; and fipon these tie- "rods-may be placed idle pulleys'j42, 43, to

' guide the envelop-feeding belts.

The envelops 6 are stacked on edge in inverted. positlons with their tops resting upon the floor 9 of the receptacle, and with their flaps foremost, in position to be pre-.

I 'sented to'the envelop-feeding belts, as seen at Fig. 6. The envelops-are pressed forward against the front plate 10 'by means of a vertical followerplate 44 having a horizontal guiding stem 45 slidable forwardly ,and backwardly in guides46, 47 A pairv of bow-shaped springs 48, secured'to the guide 47, press agalnst thefollower 44, and constantly urge the pack of envelops forward;

The stem 45 is prolonged rearwardly and' carries a handle 49,for convenience in with- I drawing the follower plate 44,- to permit the introduction of a fresh stack of envelops.

As the platen is rotated, the hoo pro- .jecting from-the rear side ofthe rear reaches 13 0f thestrips 13, descend in pairs, with points foremost,.in front of the frontplate along the body of the foremost envelop, and

10 ofthe envelop receptacle, and pass down.

catch Within the flap 50 thereof near the ends of said flap; said hooks being preferthe hooks 12 shall catch within said flap. I

ably formed upon the, outer edges of the belts, as illustrated at Fig. 8, for this purpose." The flap portion of the front en-f velop is caused to protrude slightly through the opening'll in the plate 10 (said-open-- ing being large enough to admit the entire flap .of the envelop), so as to insure' that This protrusion is eflected by bringing foilward the lower portion of the follower 44, as by placinga plate or bar 51 upon the front face'thereof', as ,at Fig. 7. The belt guiding rolls 42 and 43 are'placedjust in? front 0 the envelop receptacle,-.so' that the thin yielding hooks are guided dow wardly in (contact, orv almost in contact .wi hsaid front plate 10, and tend to 'spring'rearwardly I against an glide down in contact with the body ofi he envelop and; to insert -.them

I selves between said bodyand the protruding flap.' From the lower guide roll 43, the

belt is .led directly around the platen, and thence directly up to the toothedguide pulley 16. The receptacle may bedetachably connected to a pair of horizontal brackets 51 ,'-projecting rearwardly from the stand- Qards 29 and-30, by means ofthreaded" studs 52 rojecting below the floor of'the'receptac e and nuts 53 threaded upon said studs.

In operation, 1 the reciprocation of the I line-space lever 25 effects in th e usual manner, and through the slide 26 and pawl 27 the rotation of the ratchet wheel 28 and the platen 3, together with the sprocket wheel,

. 21 and 22 on said platen. Bymeans of the. chain pinion 20, rotation is simultaneously effected of the drive-shaft 17 and the hooks 12 descend, they run plate 10, (the upper edge of belt's 13'n taut con toothed pulleys 16, whereby the feeding strips 13 are advancedsimultaneously with the rotation of the platen." As the' rear down past the which is curved rearwardly at 54, so that the springy hooks cannot catch thereon) and press yieldingly.

against theenvelops and engage the flap 50 of the foremost envelop and draw the same downwardly from the receptacle, as seen at Fig. 2, and carry it forwardly under the platen and up in front thereof, where the l address is written by the operation ofthe keys l, the handle 25 being operated at the a conclusion of each line, both to line-space the envelop and return the carriage? to begm a new llne'of writing.

'The platen-is rotated sufliciently to bring the succeeding envelop into position for writing, the envelops following one another. around the platen, as they are caught upon the hooks. After writing, the envelops are carried upby the belts and over the guiding pulleys 16 and discharged by the hooks upon an inclined table or'chute 55 extending rearwardly and downwardly from the standards As soon as" all the envelopsihave -been' .fed, the handle. 49' may be pulled backwardly and a fresh stack inserted into the through which project screw studs 59 from the posts 5-6;}the latter being secured by nuts 60. The nuts" may be loosened and the posts 56"droppedfwhen .the machine is to remain out of. use to discontinue secured by screws .63 to the standards 29,

30; the guiding portion 61 flaring forwardly at its lower-end at a point near the'platen 3, in position to catch the. leading edge of.

the envelop and hold it-back, while the lower portion of the envelop is curved around the bottom of the-p1aten,this guide beinggeffection, the drive-shaft the necessary "working tension upon the double belt.

A front guide for the envelops may be formed of wireand consist of an' inverted .110 looped portion 61, pendent from arms 62 tive until the-envelop resumes itsnormal straight condition an} rides up the rearwardly inclined forward reach of the double belt,

'It will be understood that each operation of the line-space lever 25 causes a single line-spacing movement of-the platen. Hence the movements of theenvelop-carrying double belt are equal to the line-feeding movements ofthe'platen. The intervals between the hooks 12 arev multiples of the linespacing interval, so that a given number of vibrations on the lever 25 will advance one chine.

-pair of hooks to exactly .the. position first occupied by the preceeding pair of hooks.

Where the grip exerted by the hooks 12 on the envelops is not suficient to hold the envelops in place on the belt after they have been drawn from the receptacle, I provide a table 64 extending downward from the floor of the receptacle behind and in engagement with the reach 13 of the belt. Prior to the withdrawal of the upper edge of the envelop from the receptacle, .the lower. edge of the envelop, with the hooks in engagement with the flap, will be drawn between the table and the belt. The table operates to retard the passage of the envelop downward, as by pressing the envelop gently against the belt, ,creating frictional resistance, so as to prevent the disengagement of the envelop from the hooks. Otherwise the envelop once free from its receptacle might drop out of the hooks and fail to be properly printed and discharged from the ma- The table 64 may beyielding to accommodate .envelops of varying thicknesses. The table cotiperates with .the belt in conducting the envelops to the platen.

I tures,

Une of the objects of the present invert tion is to render it practicable to address large quantities of envelops rapidly and inexpensively by means of previously perforated master sheets, which of course may be used repeatedly, as required.

The typewriter keys are operated by means of a series of hammers 65, each of which is attached to one of the power pneumatics 66, all connected to an exhaust pump or bellows 67. The pump-67 is operated by. a pitman 69 on shaft 70 connected by a belt 71 to main power shaft 72. v

The collapsing of a power. pneumatic 66,

to operate a key hammer 65, is controlled I by means of a primary pneumatic 73, and74, Fig.- 11. Each priand a secondary mary 73 is connected by a separate tube 75 to the tracker boards 76, 77, so that its action may be controlled from either tracker.

These trackers are provided with aperone for each pneumatic actuator, which apertures are normally held closed, but may be" opened to admit air to the primary pneumatics 73.

When air is admitted through an aperture in either of the tracker boards 76, 77, it will flow through the connecting pipe 75 to a chamber 78 in the bottom of the primary 73 (see Fig. 11), to lift the diaphragm 79. This lifts the stem 80, to cause the valve 81 to close the opening 82 in the seat 82, shut ing OR the chamber 83 from. suction chamber 84; at the same time the valve 85,- also fast on the valve stem 80, is raised from of chamber 83 and permits the external air to enter. The

air upon entering the chamber '83 is conryreea ducted through pipe 88 to chamber 89 in the bottom of secondary pneumatic 74, similar to the chamber in the primary pneumatic, and raises the diaphragm 90. This lifts'the valve stem 91 to unseatthe valve 92 and allow the air in the chamber '93 to be sucked out through the opening 94 into the suction chamber 84, while a s ec'ond valve 95 on the stem 91 closes the opening 96 in the When the aperture in the tracker board is again closed by the farther movement of the master sheet, the pressure on the primary diaphragm 79 is reduced as by means of a pin hole or bleed opening-in the diaphragm, permitting the air in chamber 78 to escape into the exhaust chamber 84, and the valve stem will drop to seat the valve over the opening 86, and lower thevalve 81 from the opening 82*, which permits the air in the chamber 83 to be sucked out to relieve the pressure on the secondary diaphragm and allow valve stem 91 to drop. When valve stem 91 drops, the valve 92 again cuts off the chamber 93" and pneumatic 66 from suction chamber 84, while valve '95 in dropping permits theexternal air to expand said pneumatic 66 again, and allows the tvpewriterkey to resume its normal position.

The opening and closing of the apertures in each tracker boardis effected by means of a perforated master sheet 98, Fig. 13. These perforations 99 are arranged across the master sheet, according to the key or pneumatic desired to be operated, and .fol-

low each other along the master sheet, so

' to a shaft 106 suitably geared to the main power shaft 72. The speed of the master sheet, which controls the operation of allother parts, may be regulated by shifting I the friction roll 105 along the shaft 106 so as to engage the disk 104 at various distances from the center. 7

When the carriage 7 of the typewriting machine has reached the limit of its travel, the work-sheet may be line-spaced and the carriage returned, by means of a screw or worm 107, constantly driven by suitable 130 gearing and shafting from the main shaft 72. Whenever the carriage is to be returned or the work-sheet in'the carriage is to be line-spaced or fed forward, a perforation in the master sheet 98 brings a special pneumatic 108 into operation, to rock a bell crank 109 by means of a connecting link 110, to thrust forwarda plunger 111. The

free end of this plunger normally rides upon a support 112, and is provided with a stepped portion 113, so that the plunger will rlse whenit is thrust forward to a certain extent. When the plunger 111 moves forward it strikes'a rod 114 of a rocking frame 115, which carries, a slidable' half-nut or toothed member 116,-"and swings the latter ii nto engagement with the constantly rotating screw or worm 107. The toothed member116, upon engaging the screw or worm 107, will be moved along the frame 115 to the right (left in Fig.3), and drawback the carriage 7 by a finger117, whose looped end 118 engages the line-space lever 25. Returning the carriage 7 by means ,of the line-space lever 25, forces back theusual slide 26 and causes the pawl 27-to-feed the .r'atchet wheel 28 and platen 3, to advance the work-sheet. ,To keep the, toothed member 116 in engagement with the screw or worm107 until the carriage has returned to its initial starting position,'the rock frame 115 is locked in its forward position by a latch 119,.forced behind said frame by a spring'120. In returning, the toothed member 116 strikes the latch 119 and forces it back until the thin portion 121 permits the rock frame to return to its normal position i and disengage the .member 116 from the screw.

from the master through means of bell crank 122 connected .The feeding of the masterfsheets 98 is automatically stopped while the carriage is returned, by lifting the pressure rolls 100 sheets, accomplished with a rod 123 to the rock frame11'5, so

that when saidrock frame movesforwardto engage the member 116 with the screw or worm'107, the arm 124 of the bell crank-.-- :122 will raise the supportingarms 125 ofthe' pressure feed rolls 100,'whe reupo'n the feed rolls 101 will rotatev idly without carrying along the master sheet. The bell crank arm 124 is connected through "a vertical link to a similar armfor lifting the lower rollsupporting arms 125 so that both upper and lower rolls 100 are lifted.

The introduction of the work member into the typewriter up to the writing point,'and

feeding of the work member out of the typewriter when the address is completed,- are controlled by a second master sheet, which is' endless and is arranged, to run over the lower. tracker 77. This lower master sheet contains perforations for causing action of the pneumatic 108 controlling the 127, to thrust forward the. bar or. plunger 128 and cause its free end 129 to strike a pin '130 'on lever I31, and force cam roll 132 under the cam portion 133 on the lower feed roll. supporting arm 125, and raise or release the latter to stop the lower master sheet from feeding. At the same time the upper master sheet is made active. cam roll 13 1 is withdrawn from beneath the cam portion 135 on the upper supporting arm 125, which drops and causes the upper The upper or address master sheet to travel for writing the address. After the address is completed, the upper master sheet is silenced. A. perforation in the upper or address master sheet causes a power pneumatic '136 to collapse and rock a bell crank 137, to thrust 'the bar 138 forward to strike the pin 139 on the rocking lever 131, and force the upper cam roll 134 beneath the cam portion 135 of the upper feed roll supporting arm again. This stops the upper or address master sheet, and the lower master sheet starts again, to feed out the addressed en"- velop and insert a fresh one, whereupon the address sheet is started again to write another address.

the. rocking lever .131, which controls the feeding of the master sheets, are supported near their forward ends upon pins 140, and

The bars 128 and 138 for shifting:

are provided with stepped portions or cams 141, to gage the distance the lever" is to be moved, by raising the bar clear of the path of the pin 130 or 139. t

improvements may be used without others.

Having claim: ,1

-1. The combination withva typewriting machine having a platen, of an envelop sheet mechanism controlling said type-operating means, a bodily movable envelop carrier havingvmeans for positively seizing the .envelops sefiatz'm and withdrawing them from the magazine, and means controlled by the master sheet mechanism for causing said carrier'to pass the magazine and for advancing the envelop positivelv and arresting j Variations may-be resorted to within the "scope of the invention, and portions" of the 'thus described my invention, I

magazine, type-operating means, master it at a predetermined position upon the platen with reference to the writing line thereon.

2. The combination with a typewriting magazine,

machine having a platen, of an envelop type-operating means, master sheetmechanism controlling said type-operating means, abodily movable envelop carrier having means for positively seizing the .envelops serz'xttim and withdrawing them from the magazine, and means controlled by the master sheet mechanism for causing said carrier to pass. the magazine and for advancing the envelop positively and arresting it at a predetermined position upon the platen with reference to the writing line thereon, and then line-spacing the envelop and discharging it. while advancinganother envelop to the printing line on the platen.

3. The combination of a typewriting machine having a platen, an envelop magazine, type-operating means, master sheet mechanism controlling said'type-operating means, and means controlled bysaid master sheet mechanism for positively withdrawing envelops serz'atz'm at predetermined intervals from said magazine, and positively carrying them to a predetermined position'upon said platen.

L-The combination'of a typewriting machine having a platen, an envelop magazine, type-operating means, master sheet mechanism controlling said type-operating means, and means controlled by said master sheet mechanism for positively withdrawing envelops seriatim at predetermined intervals from said magazine, and positively carrying them to a predetermined position upon said platen; and then effecting the line-feeding and discharge of the envelops.

5. The combination with a typewriting machine having a platen, of an envelop magazine, type-operating means, master sheet mechanism controlling said type-operating means, and means controlled by said master sheet mechanism for positively seizing the envelops sem'atim and withdrawing them from the magazine and advancing them to a predetermined position upon the "platen.

6. The combination with a typewriter platen, of type-operating means, master sheet mechanism controlling said type-operating means, an envelop magazine, means having a positive driving connection with said platen and moving past said magazined ad-.

for seizing the envelops seriatz'm an vancing them to the platen and holding them in a predetermined position thereon,

and an automatic mechanism controlled by the master sheet mechanism for efiecting rotation of said platen.

7. The combination with a typewriting machine, including arevoluble platen, of an envelop magazine, type operating means,- master sheet mechan sm foncontrolhng said type-operating means and for line-spacing the platen, and an envelop conveyer in the form of an endless band passing around said platen and past said magazine and having thereon envelop-seizers at equal intervals, the distance from each envelop seizer to the next being a multiple of the linespacing distance or movement'of the platen, and said master sheet mechanism having means for line-spacing the platen to an extent equal to the distance between said seizers at each envelop-feeding and spacing operation.

8. The combination, with a platen;'of an envelop feeder for said platen; type-operating means; master sheet mechanism controlling said type-operating means; means actuated automatically by said master sheet mechanism for rotating said platen; and connections between said platen and said feeder for transmitting the movement of the former to the latter.

9. The combination, with a platen; of an envelop feeder for said platen having spaced means thereon to engage the. flaps of the envelops, so as to remove individual envelops from -a pack and supply them to'the platen; type-operating means; and master sheet mechanism controlling said type-open ating means and connected to'inter mittently drive said feeder through distances corresponding exactly to the spaces between suecessive flap-engaging means. a I

10. The combinatiom with a platen; of type-operating means; an envelop maga-- zine; a carrier having means'for positively seizing the envelops from said magazine; an automatic operator controlling said typeoperating means; and mechanism also under the control of said operator for driving said carrier soas to positively advance said 'envelops one at a time to a precisely-deter mined position upon the platen, and thereafter line-space said envelops and finally positively discharge them.

11. The combination with'a typewriting machine having a revoluble platen, of a magazine for envelops, a conveyer for engaging the envelops and positively carrying them serz'atim to writing position on the platen, a continuously operating powerdriven element, type-operating means, and

'master sheet mechanism for controlling said said driver and said conveyer for operatmg ,able into and out of operative relation to said driver, means operatedvby said trans-.

the latter. A c

13.'The combination With a typevvriting machine having a revoluble platen, of a' magazine for envelops, a conveyer having means to engage the envelops and positively carry them from the magazine to the platen and hold them stationary in-, printing posi-- tion on the platen, a continuously operating driver, a power-transmitting member mov mitting member to drive said conveyer, typeoperating means, and master sheet' mecha-. nism for controlling both said type-pperating means and the said movements of said transmitting member. 2

14. The'combination with a typewriting machine having a revoluble platen, of a 'ma azine for envelo s a conveyer havin means to engage the envelops and positively carry them from the magazine to the platen and hold them stationary in printing posi tion on the platen, a continuously operating driver, a line spacing mechanism for effecting line-space rotations of the platen, driving connections between the platen and the conveyer for operating the latter When the platen is rotated, type-operating means, and master sheet mechanism for controlling said type-operating means and for automatically e'fl'ecting-a connection between the line-space mechanism and said driver to cause the operation of the line-space mechanism and thereby bringthe envelops to position on the platen. i 15. The combinationvvith a typewriting machine having a revoluble platen, ofa magazine locatedat'the intake side of the platen, a flexible conveyer running over the ,platen, means on said conveyer for engaging the flaps of envelops in said magazine and carrying them from the magazine onto the platen, means for guiding the conveyer from the magazine directly to the platen, means to hold the envelops on the conveyer as'they are carried to the platen, type-operating means, and master sheet mechanism for controlling said operating means and for automatically effecting intermittent operations of the-conveyer through predetermined dis tances, thereby carryingthe envelops seriation from the magazine to Writing position on the platen, and holding them in such position during the, printing operation.

16. The combination, With a typevvriting machine including a platen; of an'envelop magazine; type-operating means; mastersheet mechanism controlling said type-operating means; and a train of mechanism extending from said master-sheet mechanismto said magazine and, also under the control of the former, fortaking the envelops from the magazine and lmparting to each envelop v a prelimited traveling movement to bring it envelop a prelimited traveling movement to bring it. to a precisely-predetermined position upon the platen with reference to the writing line thereon, said train of mechanism' including an envelop-seizing and carrying device mechanically connected to the platen to be timed thereby, and also including means operable repeatedly. under the control of the master-sheet during the I travel of the latter .for effecting concurrent platen and the envelop-carrying device connected thereto, to' advance each envelop 'step-by-step advance movements of the from the magazine a predetermined number of steps preparatory to Writing ,the first line thereon.

- 18. The combination, with a typewriting mechanism, including a platen and linespacing inechanism therefor; of an envelop magazine; type-operating means; master-l sheet mechanism for controlling the'actuation thereof; an envelop carrier arranged Y to pass said magazine, and to travel there-.

from to said platen, said carrier being pro-' vided, at intervals equal tovexact multiples of the line-spacing movement of the platen, with pickup devices for positively seizing the envelops and Withdrawing them one after another from the magazine; and auto matic means under the entire control of the 'master-sheet mechanism for causing said carrier to automatically and positively advance a :fresh envelop to precise initial printing position on the platen by means of each multiple line spa'cing movement of said platen.

19. The combination, Witha typewriting mechanism, including va platen and linespacing mechanism therefor; of an envelop 1 magazine; type-operating means; mastersheet mechan sm for controlling the actuation thereof; an envelop carrier arranged to pass said magazine, and to travel therefrom tosaid platen, "said carrier being pro vided, at intervals equal toexact multiples of the line-spacing movement of the platen, with pickup devices for positively seizing the envelops and Withdrawing them oneafter another from the magazine; and autoi matic means under the entire control of the master-sheet mechanism for causing said carrier to automatically and positively discharge a completely-typed envelop from saidplaten by means of each multiple linespacing movement thereof, and to concurrently advance a fresh envelop to precise initial printing position on said platen.

20. The combination, with a typewriting mechanism, including a platen and line spacing mechanism-therefor; of an envelop magazine; type-operating means; ,master-.

' sheet mechanism for controlling the actutherefrom "to said platen, said band being ation thereof; an endless carrier band arranged to pass said magazine, and to travel provided, at intervals equal to exact multiples of the line-spacing movementof the platen, with pick-up devices for positively seizing the envelops and withdrawing them one after another from the magazine; and automatic means under the entire control of the master-sheet mechanism for imparting to .said band the exact movement required for bringing the envelop to the precise initial printing-position on said platen preparatory to writing the first line thereon. 21. The combination, with a typewriting .mechanism, including a platen and linespacing mechanism therefor; of an envelop magazine; type-operating means; master sheet v tion t ereof; an endless carrier band arranged to pass said magazine, and to travel with pick-up devices for therefrom to said platen and around and beyond the same, said carrier being provided, at intervals equal to exact multiples of the'line-spacing movement ofthe platen, ositively seizing the envelops and withdrawing them one after another from the magazine; and automatic meansunder the entire control of the master-sheet mechanism for causing said band to automatically and positively discharge a completely-typed envelop from 'said platen by means of the line-spacingmovement thereof, and to concurrently ad- Vance a fresh envelop to precise initial 7 printing position on said platen.

22. The combination, with a typewriting mechanism, including a platen; of an en- 'velop magazine type-operating means; master-sheet mechanism for automatically controlling the actuation thereof; an envelop carrier arranged to pass said magazine and to travel from the same to said platen, and

having means for positively seizing the envelops and withdrawing them one after another from the magazine; and automatic 7 means controlled by the master-sheet mecha- ,nism for causing said carrier to automaticall y andpositively advance in succession to echanism for controlling the actua the platen each envelop carried thereby, so as to aiford the master-shbet entire control over the initial printing position of the envelop on the platen.

23. IIhe combination with a typewriting machine, including types and a platen, of a magazine for work-pieces, a feeder for removing the work-pieces serz'atim from said magazine and positively carrying them to writing position on said platen, automatic actuating means for said types and platen, automatic actuating means for said feeder, a separate control set for each of said automatic means, and means for shifting the action from one to the other.

24. The combination with a typewriting -machine', including types andva platen, of

automatic means. for actuating said types.

25. The combination with a typewriting machine, including types and a platen, of automatic ,means for actuating said types and platen, a magazine for work-pieces, a feeder for removing the work-pieces seriatim from said magazine and positively carrying them to writing position on said platen. a master sheetfor controlling the operation of said automatic means, and a separate master sheet for controlling the operation of said feeder.

i 26. The combination with a typewriting machine, including types and a platen, of automatic means for actuating said" types and platen, a magazine for work-pieces, a

' feeder for removing the work-pieces sew} atz'm fromsaid magazine and positively, carrying them to writing position on said platen, a master sheet'for controlling the operation of said automatic means, a separate master sheet for controlling the operation of said. feeder, and feeding mechanism for said master sheets arranged to feed the one while the other is passive. andvice' versa.

' LYMAN R. ROBERTS. Witnesses:

J WALTER H. DAYTON,

ARTHUR JOHNSON. 

